More than 50m

More than 50m Coherence Length Overview

Coherence length is defined as the distance over which the laser beam can travel without experiencing a phase discontinuity.  This is a critical parameter in applications such as holography and interferometry where beams may be required be split with each leg going a long distance before being recombined.   The coherence length is directly related to the linewidth of the laser, and as a result, long coherence length lasers are almost exclusively single mode.   Here at RPMC Lasers, we offer a wide range of diode-pumped solid-state (DPSS) lasers with a coherence length of more than 50m.

Contact us today to let one of our knowledgeable Product Managers assist you!


Wavelength Selection

Power Selection


Narrow Linewidth



7 results found
Picture Part Number Type Wavelength (nm) Output Power (W) Mode Output Narrow Linewidth
LCX-1064S-100-COL: 1064nm SLM DPSS Laser LCX-1064S-XXX-CSB CW DPSS Lasers 1064 0.100, 0.200, 0.300, 0.400, 0.500 Single Mode Free Space, Fiber Coupled Yes
LCX-532S-100-COL: 532nm SLM DPSS Laser LCX-532S-XXX-CSB CW DPSS Lasers 532 0.050, 0.100, 0.200, 0.300, 0.400, 0.500 Single Mode Free Space, Fiber Coupled Yes
LCX-553S-100-COL: 553nm SLM DPSS Laser LCX-553S-XXX-CSB CW DPSS Lasers 553 0.050, 0.100, 0.150, 0.200 Single Mode Free Space, Fiber Coupled Yes
LCX-561S-100-COL: 561nm SLM DPSS Laser LCX-561S-XXX-CSB CW DPSS Lasers 561 0.100, 0.150, 0.200, 0.300 Single Mode Free Space, Fiber Coupled Yes
LRA Fiber Amplifiers 1530-1564 2.0 Yes
Narrow Linewidth Fiber Laser LRL CW Fiber Lasers 1550 0.032 Single Mode Fiber Coupled Yes
LRL2: 1.5um CW High Power Low RIN Fiber Laser LRL2 CW Fiber Lasers 1550 1.0 Single Mode Fiber Coupled Yes

LaserBoxx SLM Series

Laserboxx SLM Series by Oxxius

The LaserBoxx-SLM Series is a single longitudinal mode (SLM) CW diode laser module available in wavelengths at 633nm, 785nm, and 830nm delivering ultra-narrow linewidths thanks to its excellent temperature stability and low noise current. The Oxxius proprietary, embedded firmware locks the laser on the same mode at each startup. This compact, self-contained laser module is available in turn-key or OEM versions and utilizes a proprietary alignment-free, monolithic resonator, and comes standard with a graphic user interface with remote diagnostics via USB, RS232, or direct I/O interface.

LRL Series

LRL Laser Series by BKtel

The LRL series is a 1550nm, high-power, continuous-wave (CW) fiber laser, providing up to 1W of output power from a single-mode fiber. This series offers power tunability ranging from 10%-100%, is available with standard or polarization-maintaining fiber with FC/APC fiber or an optional collimating lens, produces a perfect TEM00 beam, and offers high-speed triggering and modulation.